Question

1) Which of the follouring statements are true for pure substances ?

(1) Pure substances contain only one kind of particles

(2)Puri substances may be compound or mixtures.

(3)Pure substances have the same composition throughout.

(4) Pune substances can be examplified by all elements other than nickel.

(i) 1 and 2
(ii)1 and 3
(iii)3 and 4
(iv)2 and 3​

Answer 1

Answer:

Correct answer is option ii)1 and 3

Answer 2

Answer:

option 2

1 and 3................